Fans call it the “best butter.”Credit: Allrecipes / AdobeIt’s easy to think that all butter tastes the same, but there’s actually a lot of variety when it comes to butter. Many brands offer their own takes on salted and unsalted butter, and sometimes even special flavors, from cinnamon to everything bagel. And within each category, the butters vary. For example, salted butter is not salted butter is not salted butter, as some are richer, more fl…